Fireproof window.



No. 825,002. PATENTED JULY 3, 1906.

W. H. MULLINS & W. G. HARE. I

FIREPROOF WINDOW.

APPLIOA'll-DN FILED 1730.28, 1904.

F!" a M 5 @JETNESSES. Q Q 6% ally employed by glaziers glass-with woodensashes. to intense heat, as in the case of a conflagra- UNITED STATESPATENT OFFICE.

WILLIAM H. MULLINS AND WILL o. :HARE, OF SALEM, OHIO. FIREPROOF wmoow.

Specification of Letters Patent.

Patented July 3, 1906.

To all whmn it may concern:

- Be it known that we, VVILLIAM H. MULLINS and ILL C. HARE, residents ofSalem, in the county of Columbiana and State of Ohio, have invented anew and useful Improvement in Fireproof \Vindows; and we do here by.declare the following to be a full, clear, and exact descriptionthereof.

Our invention relates to fireproof windows for use in fireproofbuildings and the like; and its object is to provide a windowConstruction which will efiectively withstand the heat in case of fire.

, Window-frames have heretofore been made with metallic sashes and withthe glass held therein by means of the ordinary putty usufor setting theWhen subjected tion, the oil in the putty will burn out, and thus causethe same to disinte ate, breaking the bond or seal around the g ass,leaving it unsupported, permitting the entrance of air,

causing a collapse of the window and the entrance of flame.

The object of our invention is to provide a fireproof window which isnotsubject to the above difficulties and which is able to resist thefiameand heat in case of conflagration, so

preventing serious damage liable to occur where the' window collapsesand permits the entrance of the flame.

To these ends the invention consists, generally stated, in the fireproofwindow formed of a wrought-metal sash rolled or pressed, having a seator recess, a wire-glass sheet within such recess, and a non-inflammableor fireproof cement setting the wire-glass sheet in the sash, so thatthe wire-glass sheet will be held firmly within the wrought-metal sash,and the heat in case of conflagration will act to vitrify the cement andunite it both with the sash and glass, and thereby hold the lass withinthe sash and enable it to resist oth heat and pressure.

In the accompanying drawings, Figure 1 is an elevation of a windowconstructed according to our invention; and Fig. 2 is a section, oFn anenlarged scale, taken on the line 2 2,

The sash of the window embodying our invention is formed of wroughtmetal, being prefera 1y formed of sections bent from sheet metal andproperly secured together. As illustrated,litflcomprises'themetallic'stiles 1, bottom rail 2, top rail 3, and, if necessary,both horizontal and vertical muntins, depending upoii the size andnumber of panes of glass contained therein. The rails, stiles, andmuntins which are employed are provided with seats or recesses 6, whichare preferably moved, as illustrated, in which the wireglass sheets areset by the cement, the grooved seats inclosing the same and givinggreater support to the cement holding the glass sheet to place. Thewirelassisformed of a body of glass having embe ded therein a wire mesh8 which strengthens the glass and prevents the same from breaking or,even if itcracks, prevents the pieces from falling out, such glass beingwell known in the market. The glass sheet having been seated in thegrooved recess of the wrought-metal sash, it is sealed therein by asuitable or non-inflammable or fireproof cement filled within therecess, preferably on both sides of the glass sheet and holding itfirmly therein. For this purpose we employ a fireproof or heatresistingcement, such as asbestos cement, the principal ingredient of which isasbestos, or magnesia cement, the principal ingredient of which ismagnesia, either of which cements is refractory and not affected byfire, the cements being united by suit able binders which will not burnout under intense heat. One essential characteristic of the cement isthat while holding the wire-glass sheet to lace at ordinary temperaturesunder intense eat, as in the case of a conflagration, it will becomevitrified to both the lass sheet and the body of the wroughtmeta l sash,the heat suitably uniting the glass to the sash through the cement morefirmly than when subjected to ordinary temperatures and where the sheetis simply held by the ordinary binding eifect of the cement. The cementfilling or sealing 13 indicated at 10.

When a window embodying the invention is in use, it can be subjected tovery intense heat without injury and is also able to resist IOO lateralpressure-such, for example, as where the same to be vitrified both tothe glass sheet IIO and to the wrought-metal frame, thus effectivelymaintaining the seal between the sash and glass even at such high heatsand sustaining the glass sheet against lateral strain or pressureforexample, in the case of a heavy stream of water thrown upon itholdingthe edge 'of the sheet firmly within its seat even though the body ofthe sheet is rendered plastic under the high heat to which it issubjected, While as the edges of the Wire mesh embedded in the glass arethus held.

Within the seat the entire sheet of glass is enabled to resist lateralpressure, and if the sheet becomes cracked under the heat the Wholesheet will be held to place Within its frame. As a consequence noopening will be formed through which the flame oil heated air andgases'may pass and the Window will not collapse, and it thus provides athorough protection from fire.

It Will of course be understood that details of construction. of thesash itself are immaterial and may be varied within the bounds abovestated.

What We claim is- 1. Afire oroof' Window formed of a Wrought-- metalsash having a seat or recess for the glass, a sheet of Wire-glass seatedtherein, and a filling of fireproof cement seating the Wire-glass Withinthe recess.

2. A fireproof Window formed of a Wroughtmetal sash having a groovedseat or recess for the glass, a sheet of Wire-glass seated therein, anda filling of fireproof cement seat ing the wire-glass Within the groovedrecess.

In testimony-whereof We, the said WILLIAM H. MULLINsand WILL C. HARE,have hereunto set our hands.

WILLIAM H. MULLINS. WILL C. HARE.

Witnesses:

' F. W. WINTER,

. ROBERT 0. Torrent.

